00:03
All right, we need to find the linear approximation and the error.
00:08
We're, of course, going to be using a calculator for this.
00:11
So our first step, we need to figure out what happens to x is.
00:15
And hopefully you can readily see that f of x is equal to the square root of x, where a is equal to 25.
00:24
I just want to make a note, your a is typically your second term there.
00:29
And for the most part, these problems make it a pretty reasonable number.
00:34
So what is our delta x? well, how do we get from 25 to 26? we simply add 1.
00:44
So delta x equals 1...